Head for forming rolled and extruded metal articles



Aug. 15, 1933.

T. M. HIESTER Emma? HEAD FOR FORMING ROLLED AND EXTRUDED METAL ARTICLESFiled July 10, 1931 2 Sheets-Sheet l ATTORNEY T. M. HIESTER Aug. 15,E933.

HEAD FOR FORMING ROLLED ANDEXTRUDED METAL ARTICLES Filed July 1 1931 2Sheets-Sheet 2 INVENTOR THEODORE M. H/ESTE/i.

ATTORNEY Patented Aug. 15, 1933 1,922,087 HEAD FOR FORMING ROLLED AND-EXTRUDED METAL narrows I Theodore M.- Hiester, Dayton, .Ohio, assignorto United Aircraft Products, Inc., Dayton, Ohio,

a Corporation of Ohio Application July 10, 1931. Serial No. 549,856

11 Claims.

My invention relates to a head for forming rolled and extruded metalarticles.

It is the object of my invention to provide a head adapted to rotate, tosupport a plurality of rotatable, pivotally mounted arms and to guidethose arms downwardly and outwardly in a predetermined path and tosupport on the end of the arms as they rotate and move downwardly andoutwardly forming tools adapted to roll and extrude simultaneously asheet of metal without changing the thickness or configuration of thatportion of the metal which is untouched by the tools.

In particular, it is my object to provide mechanical means for guidingthe rollers downwardly as they rotate in a path that is substantially astraight line to conform to the straight line surface of a form overwhich the metal is being extruded.

In particular, it is my object to provide in such a combination aforming tool that has a rolling surface and an extruding edge so thatthe thickness of the metal, where engaged by the roller, will bereduced, the metal will be rolled to form and its surface maintained insmooth and even condition.

It is an additional object to provide retaining means for holding themetal in position on its form while being extruded and rolled and foryieldingly accommodating the relationship between the support for theroller arms and the retaining means.

Referring to the drawings:

Figure 1 is a side elevation of the forming head with a sheet of metalin position to be formed resting on top of-the form;

Figure 2 is a similar view showing the former part way through its workwith the metal sheet broken away to show the nature and extension of therolling and extrusion that has taken place;

Figure 3 is a section on the line 3-3 of Figure Figure 4 is a top planview;

Figure 5 is a section on the line 5-5 of Figure 3;

Figure 6 is a bottom plan view.

Referring to the drawings in detail, 1 is a stem for attaching the headto a drill press or similar mechanism, generally designated, forrotating the head as at 1a, which mechanism can reciprocate it androtate it. 2 indicates an arm supporting sleeve upon which is pivotallymounted in the slots 3 the cam arms 4 on the pivots 5. These cam armsare provided with arcuate cam slots 6 in which are mounted thestationary pins 7 so that, as the arm supporting sleeve 2 descends, thearms will be guided downwardly and outwardly in the paths determined bythe slots 6 and cam pins 7.

These pins are supported between the ears 8 carried on the head 9.

This holding. head 9 is provided with a sleeve 10 which reciprocateswithin the cylinder 11 of the arm supporting sleeve 2. Between these twomembers within the cylinder 11 is a helical spring 12.

The thrust on the bottom of the retaining head 13 is taken by the ballbearings 14. This retaining head rests upon the top of the metal at 15to hold it upon the conical form 'or support 16 against the top 17thereof.

The arms 4 have stud shafts 18 with heads 19 for supporting rotatablythe rollers 20 which have arcuate rolling faces 21 and extrusionshoulders 22. The shoulder 22 engages with the flat surface of the metalsheet 23 as at 24 to extrude it downwardly over the face 25 of theconical form so at 15-and 23 is undisturbed physically while the 35metal at 26 is changed in its configuration and in its thickness.

It will'be understood that I select thecam slot 6 of such curvature thatthe roller surface will generally travel downwardly in a straight linesubstantially parallel to the surface 25 of the conical form 16. It isobvious that I might employ the reverse construction by placing theguide mechanism at the top of the arm and the pivot at 7.

It is further obvious that, instead of reciproeating the arms androllers, I can reciprocate the form 16.

It is obvious that, instead of rotating the arms and rollers andreciprocating them, it is possible to rotate and reciprocate the form,but, in practice, I find it more convenient to reciprocate and rotatesimultaneously and to guide the arms and rollers while the rollers arerotating about their own axis retaining the iorm 16 stationary.

It will be understood that'I desire to comprehend within my inventionsuch modifications as may be necessary to adapt it to varying conditionsand uses.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. In combination, an arm supporting member, a plurality of arms pivotedthereto, means to guide said arms downwardly and outwardly, said meansincluding a stem having a rotatable head thereon, and means on the endsof said arm for extruding metal engaged by the head and for rolling themetal so extruded, said guiding means being arranged to guide saidroller and extruding means substantially in a straight line downwardlyand outwardly.

2. In combination, an arm supporting means adapted to be rotated, aplurality of arms on said means and having cam slots to guide them, aguide for said means having means engaging said cam slots, means forpermitting of relative movement between said cam slot engaging means andsaid arms while guiding said arms, said means on the ends of said armsfor extruding a metal sheet.

3. In combination, an arm supporting means adapted to be rotated, aplurality of arms on said means and having cam slots to guide them, aguide for said means having means engaging said cam slots, means forpermitting of relative movement between said cam slot engaging means andsaid arms while guiding said arms, and roller means on the ends of saidarms for extruding a metal sheet and rolling a metal sheet.

4. In combination, a rotatable arm supporting means, a plurality 'ofarms mounted thereon depending therefrom, a guide for the supportingmeans having means engaging said arms to guide them downwardly andoutwardly, and extruding and rolling rollersmounted on the ends of saidarms, said guide means comprising stationary pins engaging cam slots insaid arms.

5. In combination, a rotatable arm supporting means, a plurality of armsmounted thereon depending therefrom, a guide for the supporting meanshaving means engaging said arms to guide them downwardly and outwardly,and extruding and rolling rollers mounted on the ends of said arms, saidguide means comprising stationary pins engaging cam slots in said arms,said rollers having extrusion portions and rolling portions.

6. In combination, 'an arm supporting sleeve, a support for said sleeve,a plurality of depending arms pivotally mounted on said sleeve, metalengaging means mounted on said arms. said arms having cam slots therein,a metal holding means on said support, a plurality of pins mountedthereon for engaging each of said slots, and means for yieldinglyresisting the movement of said arm supporting sleeve and support withrespect to one another.

7. In combination, an arm supporting sleeve,

a support for said sleeve, a plurality of depending arms pivotallymounted on said sleeve, metai engaging rollers mounted on said arms,said arms having cam slots therein, a metal holding means on saidsupport, a plurality of pins mounted on said support for engaging eachof said slots, and means for yieldingly resisting the movement of saidarm supportingsleeve and support with respect to one another.

8. In combination, an arm supporting sleeve, a support for said sleeve,a plurality of depending arms pivotally mounted on said sleeve, metalengaging rollers mounted on said arms, said arms having cam slotstherein, a metal holding means on said support, a plurality. of pinsmounted on said support for engaging each of said slots, means foryieldingly resisting the movement of said arm supporting sleeve andsupport with respect to one another, and ball bearing means between saidholder and pins in the slots.

9. In combination, a conical form having a straight wall surface, an armsupporting sleeve, means to rotate the sleeve, a plurality of pivotallymounted depending arms on said sleeve, means to guide said arms so thatthe ends thereof will travel substantially parallel to the surface ofsaid form, rollers mounted on said arms adapted to rotate with theirmajor plane at substantially right angles to their bodily movementdownwardly over said form.

10. In combination, a conical form having a straight wall surface, anarm supporting sleeve, means to rotate the sleeve, a plurality ofpivotally mounted depending arms on said sleeve, means to guide saidarms so that the ends thereof will travel substantially parallel to thesurface of said form, rollers mounted on said arms adapted to rotatewith their major pins at substantially right angles to their bodilymovement downwardly over said form, a holding means mounted on said formfor holding a sheet of metal thereon, telescopic means connecting saidholding means with said arm supporting sleeve and yielding varound andupon their own axes.

THEODORE M. HIESTER.

